Dumb-waiter clutch mechanism.



PATENTED NOV. 21, 1905.

H. KELLER. DUMB WAITBR CLUTCH MECHANISM.

APPLICATION FILED OUT. 22, 1904.

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HENRY KELLER, OF LASALLE, NEW YORK.

DUMB-WA ITER CLUTCH MECHANISM.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed-October 22, 1904. Serial No. 229,637.

T0 at whom it may concern:

Be it known that I, HENRY KELLER, a citizen of the United States,residing at Lasalle, in the county of Niagara and State of New York,have invented certain new and useful Improvements in Dumb-Waiter ClutchMechanism; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, forming part of this specification.

My invention relates to dumb-waiter clutch mechanism, and has for itsobject the combination of clutch mechanism with the hoistingrope of adumb-waiter in such manner that the raising of the dumb-waiter carriageto its uppermost point of traverse operates automatically to bring theclutch mechanism into operation.

My invention is hereinafter fully set forth and described andillustrated in the accompanying drawings, in which- Figure l is a frontview in elevation of an apparatus embodying my invention with partsthereof broken away. Fig. 2 is a vertical section of the same.

In the drawings illustrating my invention, A is a dumb-waiter caseextending up through two stories of abuilding, and B the floor of thesecond story thereof. In the lower part of this case A, below the floorB, I have shown a refrigerator-chamber A, provided on one side with adoor C, and back of the upper portion of the refrigerator-chamberA, Imake an icereceptacle D, adapted to receive and retain a supply of icefor cooling the refrigeratorchamber A; The wall between the upper partof the refrigerator-chamber A and the ice-receptacle D is provided withan opening D, through which communication is had between theice-receptacle D and the refrigerator-chamber A. The ice-receptacle D isalso provided with a suitable drip-cock d. p The shelving for therefrigerator-chamber A is made in the form of a dumb-waiter carriage E,adapted to rest in the refrigeratorchamber A and slide up and down inthe dumb-waiter case A. This carriage E has shelves 6 therein, so as tosupport things placed thereon. To the upper part of the carriage E, Isecure a hoisting-rope F, which passes up over a pulley G and isprovided at its opposite end with a counterweight H, preferablyoperating in a vertical passage a in the side of the case A, as clearlyshown in Fig. 1. For retaining the carriage above the floor B, I providea spring-clutch I, provided with a tripping-lever J, which is adapted tobe engaged by the bail e of the dumb-waiter carriage when raised, asshown in dotted lines in Fig. 1, and release the clutch I, so that itwill clamp the rope F and retain the carriage E in an upraised position.In order to release the clutch I, I provide a lever K, which projectsout from the front of the case A and is adapted to engage a collar 2' onthe clutch I, whereby it can be moved back out of engagement with therope F, when it is again engaged by the tripping-lever J and heldthereby out of engagement with the rope F.

In the front of the case above the floor B, I provide a door G, throughwhich access can be had to the inside of the case A at that point.

Having thus described my invention, so as to enable others to constructand use the same, what I claim as new, and desire to secure by LettersPatent of the United States, is

The combination in a dumb-waiter mechanism of a vertically-movablecarriage, a rope suspending said carriage, a pulley over which said ropeoperates, a spring-actuated clutch adapted to engage said rope, and alatch adapted to be engaged by the carriage so as to bring said clutchinto operation, substantially as set forth.

In testimony whereofI aflix my signature in presence of two witnesses.

HENRY KELLER.

Witnesses:

A. W. MORSE, H. M. STUReEoN.

